Steatite

Characteristics

Item

Value

Unit

Mechanical Characteristics

Colour

White

Density

2.7

g/cm³

Bending Strength

140

MPa

Compressive Strength

900

MPa

Elastic Modulus

110

GPa

Fracture Toughness

-

MPam^1/2

Weber Coefficient

-

M

Vickers Hardness

-

HV0.5

Thermal Characteristics

Coefficient of Line Thermal Expansion

7~9

10^-6K^-1

Thermal Conductivity

2

W/mK

Thermal Shock Resistance (Put in Water)

100

?T°C

Max Working Temperature

1,200

°C

Electrical Characteristics

Volume Resistance at 20°C

>10¹¹

?cm

Dielectric Strength

20×10⁶

V/m

Dielectric Constant

6

ε_r

One MHZ Dielectric Loss Angle at 20°C

1.2

tanδ

Chemical Characteristics

Nitric Acid (60%) 90°C

-

WTLossmg/cm²/day

Sulphuric Acid (95%) 95°C

-

Caustic Soda (30%) 80°C

-